Autopep8

* fix bugs
* 441 : related code is W503
* 443 : related code is W503

* new feature: add W605 fixed method
* new feature: add E252 fixed method (Thanks to patch by gmbnomis)
* change: W690 (only use autopep8) is DEFAULT_IGNORE.
* fix bugs
* 415, 399, 410, 392
* 386 (Thanks to patch by Hnasar)

* load config value from flake8 section
* fix bugs (322, 389, 332, 388)
* support Python version: 2.7+ or 3.4+

* new feature: add E133 fixed method and `--hang-closing` option
* improved: E712 fixed method logic (368)
* fix bugs (330, 331, 351, 353)

* fix bugs (246, 323, 333, 338, 346)
* improve verbose output